For the diagnostic type, refer to the diagnostic type list in the DTC description.
Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) Diagnostic system check-engine controls".
1) Connect the scan tool.
2) Turn ON the ignition switch.
3) While observing the Brake Pedal Switch 1 parameter on the scan tool, fully depress and release the brake pedal repeatedly. Is Active displayed when the brake pedal is depressed and Inactive when it is released?
Yes
=>Go to Stoplight switch 2 signal check.
No
=>Go to Inspection for open circuit in stoplight switch ground circuit.
1) Inspect the ground circuit between the stoplight switch (pin 3 of C68) and the ground terminal for the following. Is the result normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Inspection for open circuit in stoplight switch 1 power supply circuit.
No
Repair the circuit as necessary.
1) Turn OFF the ignition switch.
2) Disconnect the stoplight switch harness connector (C68).
3) Connect a test lamp between the ignition power supply circuit (pin 5 of C68) and the body ground.
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
4) Turn ON the ignition switch. Does the test lamp illuminate?
Yes
=>Go to Inspection for open circuit and short circuit in stoplight switch 1 signal circuit.
No
Repair the open circuit or high resistance in the stoplight switch 1 ignition power supply circuit between the ENGINE(IG1) 5A fuse and the stoplight switch (pin 5 of C68). Inspect the ENGINE(IG1) 5A fuse first.
1) Inspect the stoplight switch 1 signal circuit between the ECM (pin 19 of C8) and the stoplight switch (pin 4 of C68) for the following. Is the result normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Stoplight switch harness connector inspection.
No
Repair the circuit as necessary.
1) Connect the scan tool.
2) Turn ON the ignition switch.
3) While observing the Brake Pedal Switch 2 parameter on the scan tool, fully depress and release the brake pedal repeatedly. Is Active displayed when the brake pedal is depressed and Inactive when it is released?
Yes
Go to Intermittent conditions of engine.
Refer to "202.Engine 15D.Symptom(4JJ3 without DPD) intermittent conditions of engine".
No
=>Go to Inspection for open circuit in stoplight switch 2 power supply circuit.
1) Turn OFF the ignition switch.
2) Connect a test lamp between the battery power supply circuit (pin 1 of C68) and the body ground.
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
3) Turn ON the ignition switch. Does the test lamp illuminate?
Yes
=>Go to Inspection for open circuit and short circuit in stoplight switch 2 signal circuit.
No
Repair the open circuit or high resistance in the stoplight switch 2 battery power supply circuit between the STOP(+B) 10A fuse and the stoplight switch (pin 1 of C68). Inspect the STOP(+B) 10A fuse first.
1) Inspect the stoplight switch 2 signal circuit between the ECM (pin 8 of C8) and the stoplight switch (pin 2 of C68) for the following. Is the result normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Stoplight switch harness connector inspection.
No
Repair the circuit as necessary.
1) Inspect for poor connections at the stoplight switch harness connector (pins 1, 2, 3, 4, and 5 of C68). Is the connection status normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Stoplight switch inspection.
No
Repair the connections as necessary.
1) Remove the stoplight switch.
Refer to "4.Brakes 4B.Brake System stoplight switch removal".
2) Inspect the stoplight switch. Is the result normal?
Refer to "4.Brakes 4B.Brake System stoplight switch inspection".
Yes
=>Go to ECM harness connector inspection.
No
Replace the stoplight switch.
Refer to "4.Brakes 4B.Brake System stoplight switch removal".
Refer to "4.Brakes 4B.Brake System stoplight switch installation".
1) Inspect for poor connections at the ECM harness connector (pins 8 and 19 of C8). Is the connection status normal?
Refer to "LHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Engine Control (4JJ3 without DPD)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
No
Repair the connections as necessary.
Note
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM removal".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM installation".
Refer to "1.Engine 1Z.Engine Electrical Control(4JJ3 without DPD) ECM setting".
Procedure completion
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch for 1 minute or more.
3) Turn ON the ignition switch.
4) Observe the DTC information with a scan tool.